53 lines
824 B
C
53 lines
824 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <pthread.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <unistd.h>
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#include <linux/compiler.h>
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#include "../tests.h"
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static volatile int a;
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static volatile sig_atomic_t done;
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static void sighandler(int sig __maybe_unused)
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{
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done = 1;
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}
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static inline void __attribute__((always_inline)) leaf(int b)
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{
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again:
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a += b;
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if (!done)
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goto again;
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}
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static inline void __attribute__((always_inline)) middle(int b)
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{
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leaf(b);
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}
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static noinline void parent(int b)
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{
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middle(b);
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}
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static int inlineloop(int argc, const char **argv)
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{
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int sec = 1;
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pthread_setname_np(pthread_self(), "perf-inlineloop");
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if (argc > 0)
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sec = atoi(argv[0]);
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signal(SIGINT, sighandler);
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signal(SIGALRM, sighandler);
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alarm(sec);
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parent(sec);
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return 0;
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}
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DEFINE_WORKLOAD(inlineloop);
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